Question

When a nucleus emits an alpha particle, the mass number of the nucleus ____________. (2 points)

a
decreases

b
increases

c
remains the same

d
doubles

Answer 1

B is the correct answer

Answer 2

Answer:

When a nucleus emits an alpha particle, the mass number of the nucleus A. decreases!!!

Explanation:

An atom releases a Alpha particle, its atomic number decreases by two and its mass number decreases by 4.